Evidence. On application for a writ of habeas corpus, evidence may be taken orally or by deposition, or in the discretion of the court, by written statement under oath. If written statements under oath are admitted, any party shall have the right to propound written interrogatories to the person who made the statements or to file answering written statements under oath. On application for a writ of habeas corpus, documentary evidence, transcripts of proceedings upon arraignments, plea, sentence, and a transcript of the oral testimony introduced on any previous similar application by or on behalf of the same person shall be admissible in evidence. The declarations of a return to an order to show cause in a habeas corpus proceeding, if not formally denied, shall be accepted as true, except to the extent that the court finds from the evidence that they are not true. Source: 9 TTC § 107.